Constructing Item Banks for Measuring Quality of Life in Refractive Error

Abstract

SIGNIFICANCE Existing patient-reported outcome instruments in refractive error are paper-based questionnaires. They are not comprehensive and psychometrically robust. This study has identified the content of the refractive error-specific item banks that aim to provide comprehensive and scientific measurement of refractive error-specific quality of life. PURPOSE The purpose of this study was to identify minimally representative, optimally informative, and efficient sets of items for measuring quality of life in people with refractive error. METHODS First, items were identified from existing patient-reported outcome instruments. Second, items were developed from qualitative studies with people..